Merge pull request #2666 from edx/clintonb/forums-bundle

Installing forums bundle with --deployment flag

playbooks/roles/forum/tasks/deploy.yml

@@ -49,20 +49,11 @@
     - install
     - install:code
 
-- name: make Gemfile.lock writable by common_web_user
-  file:
-    path: "{{ forum_code_dir}}/Gemfile.lock"
-    owner: "{{ common_web_user }}"
-  tags:
-    - install
-    - install:code
-    - install:app-requirements
-
 # TODO: This is done as the common_web_user
 # since the process owner needs write access
 # to the rbenv
 - name: install comments service bundle
-  shell: bundle install chdir={{ forum_code_dir }}
+  shell: bundle install --deployment chdir={{ forum_code_dir }}
   sudo_user: "{{ common_web_user }}"
   environment: "{{ forum_environment }}"
   notify: restart the forum service